Grease-gun connection



June 14, 1927.

H. w. SANFORD GREASE GUN CONNECTION Fil'ed June 12. 1922 s Sheets-Sheet l Illlll June 14,1927. 1,632,149

H. W. SANFORD GREASE -GUN CONNECTION Filed June 12. 1922 s Sheets-Sheet 2 F l? F 2%; E0. .4 ii 0 I I a:

H. W. SANFORD GREASE GUN CONNECTION June 14, 1927.

Filed June 12. 1922 5 Sheets-Sheet 5 Q N 5Q E a 3 fi Q A /fi 3 & Q LN ;///r/////r//////// r!I!!!flflllfllllll1 lfllfll%%w a m ,n w y/zy nm E m Wm w 5 alignment with'the tube, A, and having' its Patented June 14, 19 27.. I

UNITED STATES PATENT omc HUGH w. SANFORD, or

KNOXVILLE, TENNESSEE.

GREASE-GI-IN coNNiictrxoN.

Application filed June 12, 1922. Serial No. 567,593.

receiving member iseflected by manual movement of-a member .of the structure in one direction and release of the nozzle'is effected by automatic movement of saidimemher in the opposite direction. 2

'A further object of the invention isto provide in such a structure a combination of elements which will operate to prevent the forwardv flow of grease through the A structure until the nozzle has undergone same structure;

such relative movement as to effect the seating of the nozzle on thereceiving mem'ber.

In the accompanying, drawings,

Fig. 1 is an elevation ofa structure 'embod ing myimprovement;

I 2 is 'a longitudinal section of the Fig. 3 is atransverse section on the line, 33, of Fig. 2, looking toward the left; j, Fig. 4 is a transversesection on the line,

44, of Fig. 2, lookingtoward the ri ht;

Fig. 5 is 'a transverse section on the ine, 5 5, of Fig. 2, looking towardthe left; Fig. 6 is a view similar to Fig. 2, arts of the mechanism being ina different orm;

Fig.7 is a view similar to Fig.6, parts of the mechanismbeing in different form; Fig. 8 is a section on the line, 8-8, of Fig. 6;

, Figs. 9 and 1th are sections on the lines,

' 9-4) and" 10-10, respectively of Fig. 7.

Referring first to- Figs. l to 5, inclusive, A isa flexible transmission tube leading 'from I la grease gum or similar means 'for deliver mg grease under pressure through said tube. B is a cylindrical. fixed sleeve in right hand end surrounding and immovably I secured to the lefthand end of the tube, A.

Forward (toward the left) of the tube,,A,

form an annular shoulder, B Within the sleeve, 'at theinner endof the.- tube, A, is a cross partition, B, having at its middle a forward direct'ed lug, B. At each side of said lug the partition-has a port, B".

In the forward or left hand part of the sleeve is a. nozzle or plunger, D, slidable in the sleeve and having at its rear end a head, D which is normally held against the annular shoulder, B by the expanding coiled spring, D, one end of which is seated against said head and the other end of which is seated against the across partition, B. I

Said spring may yield to allow the nozzle to move rearward relative to I the sleeve until its movement is arrested by bearing against the lug, B".

q The forward end of the nozzle is shown tapering tofadapt it to fit closely on the grease receiving ,member.

from the rear end of the bore, D radially ,outw'ard through the; outer face of the The nozzle has an axial'b'ore, D extending from its forward end rearward closeto. the head, D: A- .lateral or side admission port, D extends nozzle. .When the head, I), of the nozzle is a seated on the shoulder B the.port, D is dovered by the sleeve,

l3',-so that grease can not pass from the tube, A, through the ports,

f But when the nozzle 1s pushed rearward (rightward) in -B, and "into the port, D

the sleeve, B, the head, D compresses the spring, D, and the port, D or apart thereof, moves rearward beyond the contracted part of the slete, whereby saidport, or a part thereof, is. uncovered for the admission of grease through said'port into' the .bore,

D of the nozzle.

' rounds thefixed sleeve, B. At the forward endof the" sleeve, E, is a forked hook, E, which is adapted to extendto opposite sides of the tubular'greaseireceiving member, H

having a a athe book being or of said' head. I I I At its rear, the sleeve, E,-has an ear, E,-

' extending rearward and outwtrdfand-ada ted to receive a pintle, E which is tangential to a circle which is concentric to the fixed outer movable sleeve, slidably surthe sleeve, B, is contracted. internally to handle, an arm, F, extends downward at 0 each side of the 'fixed sleeve, B. Each of said arms has an upright slot, F which receives a stud, F, fixed on the side of'the Between the ears, F, the handle has a shoulder, F adapted to bear against the resting on the shoulder, B and the outer sleeve, E, being in its forward position, the lugs, F, acting as fulcri for forcing the ears, F forward, and the shoulder, F limiting the forward movement by bearing the flow of grease is cutoff.

against the outer face of the sleeve, B.

When the sleeve, E, is thus in its forward position, the liook, E and the forward end of the nozzle, D,are separated sufficiently to admit the head, H of the receiving member, H. The connection is to be applied as shown in Figs. 1 and 2 of the drawings, the hook, E embracing the neck of the receiving, member, H, forwardof the head, H and the nozzle, D, being opposite and near the mouth or port of the receiving member; Now the hand of the operator presses the handle, F, downward toward ,the head, D of the nozzle and arrests further movement of the inner sleeve. The

' latter part of the movement of the inner .the handle, F, the spring,

.such sliding movements of the sleeves, the

spring, D, drives the nozzle forward in the inner sleeve until its head, D againseats the shoulder, E

on the annular shoulder, B whereby the admission port, D is again covered and In Fig. 6, the structure is the same as in the preceding figures, excepting that a spring, G is inserted between the inner sleeve,.B, and the outer sleeve, E. To provide for this insertion, the outer sleeve,,E, is extended forward beyond the sleeve, B, as

far as the space tobe occupied by the spring.

and is then contracted to form a neck, E, fitting slidably around the nozzle. Thus an annular shoulder, E is formed to'constitute a seat for the forward end of the spring, the rear end of the spring being seated In the outer sleeve, E, opposite the spring, G is a vent port, E, for the escape of any grease that may leak between the inner and the outer sleeves into the chamber occupied by the spring.

The operation of this second form is the same as the operation of the preceding form, excepting that in the second form the outer sleeve, E, slides on the inner sleeve, B, and

against the forward end of the inner sleeve,

also on the nozzle, D, and the spring, G

serves inaddition to the spring, G, to normally relatively hold the outer sleeve in the forward position.

In Fig. 7, the parts are the same as in Fig. 6, excepting that the outer sleeve, E, is not contracted to form the neck, E, arid Onthe contrary, said sleeve is formed as in Fig. 2. But theinner sleeve, B, is relatively short as shown in Fig. 6. Instead of the shoulder, E, a ring, E is threaded around the forward end' of the nozzle and is of, sufiicient, diameter to fit slidably into the interior of the outensleeve. The spring, G bears against said ring and tends forward end of the to move the nozzle forward independently Furthermore, in this form the partition,

B the" lug, B and the spring, D are omitted, the seating of the head of the nozzle being effected by the spring, G Regarding this form it is to be noted that the ring E s fixed on the nozzle and that the spring, G, pushes on said ring while the other end of the spring abuts against the sleeve, B, whereby force is exerted to move the nozzle forward and to move the sleeve, B, rearward.

Concerning both these forms, it is to be noted that the power of the hand of the member,

operator is used to force the forward end of the nozzle against the receiving member and so hold the nozzle until the movement of grease into the receiving member has been completed. l/Vhen the hand of theoperator releases the handle, the handlev is raised automatically by the spring, G, whereby the inner sleeve, B, is relatively moved 'backward, and that movement carries the nozzle backward away from the receiving I claim as my invention,

1. In a grease gun connection, the combination of an inner sleeve,- an outer sleeve slidably surrounding the inner sleeve and having at its forward end means for; engaging said outer sleeve relative to a grease receiving member, a handle coupled to said outer sleeve and said inner sleeve, a spring tendlng to relatively move the outer sleeve forward, a nozzle located in the inner sleeve and-adapted to engage the inner'sleeve and tohave its forward end project out of the inner sleeve whemthe nozzle-reaches its forward'or rest position and having a longitudinal bore and 'a side admission port which is normally covered by the inner as described.

sleeve when the nozzle is in its forward position relative to the inner sleeve,-a spring tending to press the nozzle into its rest position in the inner sleeve, and means'for limiting'the rearward movement of the nozzle relative to the inner. sleeve, substantially as described,

2. .In a grease gunconnection, the combination of an inner sleeve, an outer sleeve slidably surrounding the inner sleeve and having at its forward end a hook for engaging said outer sleeve relative to a grease receiv ng member, a handle coupled to said outer sleeve and said inner sleeve, a spring tending to relatively move the outer sleeve.

forward, a nozzle locatedin the inner sleeve and adapted to engage the inner sleeve and to have itsforward end projectout'of the' inner sleeve when the nozzle reaches its forward or rest position and having a longitudinal bore and aside. admission port which is normally covered -by the inner sleeve when the nozzle is in its forward position relative to the .inner sleeve, asprmg tending to press the nozzle/into its rest to sition in the inner sleeve, and means for limiting the rearward movement of the nozzle relative to the inner sleeve, suKstantially '3. 'In a grease gun connection, the combi- .a nation of an inner sleeve having a shoulder,

an outer sleeve slidably surrounding the in- 1 her sleeve and having at its forward end means for engaging said outer sleeve relative to a grease receiving member,a handle coupled to said'outer sleeve and said inner sleeve, a spring tending to relatively move the outer sleeve forward, a nozzle located in the inner sleeve and having a head adapt- 4 ed tosea't on said shoulder and thenozzle having a longitudinal bore and a side admission port whichis covered 'by the inner" .sleeve when the nozzle is in its forward position relative to the inner sleeve and its forward end dprojects out of the innersleeve, a spring ten ng to press the nozzle into its rest posltlon 1n the inner sleeve, and means for limiting the rearward movement of the the outer sleeve forward, .a nozzle located in l the inner sleeve and having a longitudinal bore and a side admission portwhich is covered by theinner sleeve when the nozzle'is in its forward osition relative to the inner sleeve and its orward end projects outof the inner sleeve, a. spring tending to press the nozzle into its rest position in the inner sleeve,'and a cross member in operative relation with the nozzle tolimit the relative rearward movement of the. nozzle, substantially as described. i

5. In a grease gun connection, the combination of an inner sleeve, an outer sleeve slidably surrounding the inner sleeve and having at itsforward end means for engag ing said outer sleeve relative to a grease recelving member, ahandle coupled to said outer sleeve and said inner sleeve and being 7 formed for engagement withthe inner sleeve to limit forward movement of said outer sleeve, a s ringtendiiig to relatively move the outer 5 eeve forward, a nozzle located in the inner sleeve and adapted to engage the inner sleeve when the nozzle reaches its forward or rest position and having a longitudinal bore and a side admission port which is covered by the inner sleeve when the nozzle is-in its forward position relative to the inner sleeve and its forward end projects out of the inner sleeve, a spring tending to press the nozzle into its rest position in the inner sleeve, and means'for limiting the rearward movement of the nozzle relative'to the inner sleeve, substantially as described.

6. In a grease gun connection, the combination of an inner sleeve, an outer sleeve slidably surrounding the inner sleeve and having at its forward end means for engagm said outer sleeve relative to a grease rece'iving member, a handle coupled to the onterfsleeve and having ears extending over the sides of the inner sleeve'and coupled to said inner sleeve, a spring tending to relatively move the outer sleeve forward, a nozzle located in the inner sleeve and adapted to engage the inner sleeve when the nozzle reaches its forward or rest position and having a longitudinal bore and a side admission port which is covered by the inner sleeve when the nozzle is in its forward osition relative to the inner sleeve and its orward end projects out of the inner sleeve, a spring tending to press the nozzle into its rest posil tion in the inner sleeve, and means for limiting the rearward movement of the nozzle over the sides of the inner sleeve, studs fined on the inner sleeve and extended into the slots of said cars, a spring tending to relatively move the outer sleeve forward, a nozzle located in the inner sleeve and adapted to engage the inner sleeve when the nozzle reaches its forward or rest position and having a longitudinalbore and a side admission port which is covered by theinner sleeve when the nozzle is in its forward'position relative to the inner sleeve and its forward end projects out of the inner sleeve, a spring tending to press the nozzle into its rest position in the inner sleeve, and means for limiting the rearward movement of the nozzle relative to the inner sleeve, substantially as described.

, 1 8. In a grease gun connection, the combination of an inner sleeve, an outer sleeve slidably surrounding the inner sleeve and having at its forward end means for engaging said outer sleeve relative to a grease receiving member, a handle coupled to said outer sleeve and said inner sleeve, a spring applied to the handle and tending to move the handle to cause it to relatively IJIIQVQ the outer sleeve forward, a nozzle located in the inner sleeve and adapted to engage the inner sleeve when the nozzle reaches its forward or rest position and having a longitudinal bore and a side admission port which is cover'ed by the inner sleeve when the nozzle is in its forward position relative tothe inner sleeve and its forward end projects out of the inner sleeve, a spring tending to press the nozzle into its rest position in the inner sleeve, and means for limiting the rearward movement of the nozzle relative to the inner sleeve, substantially as described.

9. In a grease gun connection, the combi: nation of a tubular nozzle adapted to engage the grease receiving member, means confined from'the receiving member and again cover the-rear .part of saidbore, substantially as described, v

10. In a grease gun connection, the com? bination of means for making engagement relative to a grease receiving member, a tu-, bular nozzle adapted to engage the grease receiving member and between which nozzle and said means there is unobstructed space, means for normally covering" the rear part of the :bore of the nozzle, and manuallyactuated means for moving the nozzle against the 'grease receiving member and uncovering the rear part of said bore, and elastic means for producing rex erse movement for retract-- ing the nozzle from the grease receiving member and again covering the rear part of the bore of the nozzle, substantially as described.

11. In a grease gun connection, the com-.

bination' of a tubular nozzle to engage a greaseireceiving member, means confined for movement parallel to said nozzle and adapted to make engagement relative to the grease receiving member, means for normally covering the rear part of the bore of the nozzle,

and means including a handle for moving the nozzle against the grease receiving member and uncovering the rear part of said bore, and said means being adapted for reversal to retract the nozzle from the receiving member and again cover the rear part of said bore, substantially as described,

12. In a grease gun connection, the combination of means for making "engagement relative to dgrease receivingmember, a tubular nozzle adapted to engage the grease receiving member and between which nozzle and said means there is unobstructed space, means for normally covering the rear part of the bore of the nozzle,'and means ineluding a handle for moving the nozzle against the grease receiving memberand uncovering the rear part of said bore, and elastic means for producing reverse movement for retracting the nozzle from the grease receiving member and for again covering the rear part of the bore ofthe nozzle, substantially as described.

In testimony whereof I have signed my name, this 17th day of May, in the year one thousand nine hundred and twenty-two.

HUGH IV. SANFORD. 

